| 摘要 |
FIELD: mechanical engineering; can be used for firing practice. SUBSTANCE: automatic arms has a barrel with cartridge chamber 1, which accommodates the cartridge with bullet 5, bolt 3, return spring 4 and unlocking device 3 installed on one of the fixed parts of the arms, with the working member protruding in the bore. EFFECT: simplified design and simplified bolt kinematics. |
